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  <a name="EN-US_TOPIC_0000002199967397"></a><a name="EN-US_TOPIC_0000002199967397"></a>
  <h1 class="topictitle1">A Backup Subjob Fails Because the GaussDB T Database Is Not Running in ARCHIVELOG Mode</h1>
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    <h4 class="sectiontitle">Symptom</h4>
    <p><span><img src="en-us_image_0000002164601114.png"></span></p>
    <p>A GaussDB T backup job fails, and a message indicating an internal error is displayed in the job details area on the OceanProtect WebUI. Obtain the <strong>gaussdbt_plugin.log</strong> log files of all nodes from the host where the client is installed and the error is reported, and query the error information in logs. The following figure shows an example of the log information.</p>
    <p><span><img src="en-us_image_0000002199967445.png"></span></p>
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    <h4 class="sectiontitle">Cause</h4>
    <p id="EN-US_TOPIC_0000002199967397__en-us_topic_0000001693804674_p226894338">The GaussDB T database is not running in <strong id="EN-US_TOPIC_0000002199967397__en-us_topic_0000001693804674_b982965713484">ARCHIVELOG</strong> mode. As a result, the database status is degraded and the backup fails.</p>
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    <h4 class="sectiontitle">Troubleshooting</h4>
    <p>Set the redo log mode to <strong>ARCHIVELOG</strong>. For details, see <a href="en-us_topic_0000002164760762.html">Step 2: Setting the Redo Log Mode</a>.</p>
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     <strong>Parent topic:</strong> <a href="en-us_topic_0000002199967361.html">FAQs</a>
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